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Subjects

Geography

Star formation, formation of planets, and our solar system

In this Class 11 Geography topic from “The Origin and Evolution of the Earth,” students explore how stars form from vast clouds of gas and dust and how planets emerge from the material surrounding a young star. They examine the formation and organisation of the solar system, including the Sun, planets, satellites, asteroids and comets, while connecting these processes with Earth’s place, structure and early development within the wider universe.

Medium · Level 1 · 25 questions

TOPIC PRACTICE

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Up to 25 questions from this page. Select your focus, then start.

25 questions

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  1. Cooling and condensation of gaseous matter
  2. Waves rising in oceans
  3. Breaking of mountains
  4. Growth of trees
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  1. Dust particles, planetesimals, protoplanets, planets
  2. Planets, dust particles, planetesimals, protoplanets
  3. River, planetesimal, galaxy, planet
  4. Human, dust, Earth, Sun
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  1. Comet
  2. Protoplanet
  3. Star
  4. Nebula
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  1. Contraction of gas dust then Sun and planets from disk
  2. First Earth then Sun and later planets
  3. First Moon then Sun and later planets
  4. First oceans then planets and later Sun
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  1. Pressure of solar wind
  2. Conservation of angular momentum
  3. Collision of comets
  4. Gravity of the Moon
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  1. It completely cooled the Sun
  2. It changed comets into stars
  3. Matter gathered in it to form planetesimals and planets
  4. It separated the galaxy
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  1. When it starts revolving around planets
  2. When it becomes completely cold
  3. When oceans form in it
  4. When nuclear fusion becomes stable in its core
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  1. High temperature near the Sun and removal of light gases
  2. Excessive ice accumulation far from the Sun
  3. All planets forming from the same material equally
  4. Gas gathering due to Moon's gravity
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  1. Very high temperature near the Sun
  2. Retention of gas and ice in distant cold regions
  3. Breaking of rocks from Earth
  4. Metals coming out of the Moon
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  1. Large planets breaking into small particles
  2. Stars changing into planets
  3. Small particles joining to form larger bodies
  4. Planets moving out of the galaxy
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  1. Planetesimals are stars and protoplanets are satellites
  2. Planetesimals are gas clouds and protoplanets are comets
  3. Both are always of the same size
  4. Planetesimals are small bodies and protoplanets are larger bodies formed from them
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  1. It removed light gases from inner regions
  2. It changed all rocks into water
  3. It brought Jupiter near Earth
  4. It changed the Moon into a star
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  1. It was the boundary of the Sun's surface
  2. Beyond it icy materials could remain solid more easily
  3. It was another name for Earth's orbit
  4. There was no matter inside it
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  1. They were captured from different directions
  2. They came from the Moon's surface
  3. They formed from a rotating solar disk
  4. They formed at the center of the galaxy
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  1. Lack of water on Mars
  2. Effect of Saturn's rings
  3. Attraction of Earth's Moon
  4. Strong gravitational influence of Jupiter
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  1. Because of higher density
  2. Because of lower temperature
  3. Because of rainfall
  4. Because of forests
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  1. Spread of vegetation on Earth
  2. Heat from repeated collisions and gravitational compression
  3. Cool light of the Moon
  4. Freezing of oceans
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  1. Sun
  2. Jupiter
  3. Moon
  4. Milky Way
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  1. Planets do fusion and stars reflect light
  2. Both only reflect sunlight
  3. There is no energy difference between them
  4. Stars give energy by fusion and planets generally reflect light
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  1. The solar system is a small part of the Milky Way
  2. The Milky Way is a planet of the solar system
  3. The solar system is located inside Earth
  4. The Milky Way is a satellite of the Moon
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  1. Because it becomes a planet
  2. Solar heat and solar wind push out gas and dust
  3. Because it collides with Earth
  4. Because nuclear fusion occurs in it
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  1. Kuiper Belt is inside Earth and asteroid belt is in the Sun
  2. Both are made only of oceans
  3. Kuiper Belt is linked with outer icy bodies and asteroid belt with rocky bodies
  4. Both are located in star cores
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  1. It forms the surface of inner planets
  2. It is the center of the Sun
  3. It is Earth's atmosphere
  4. It is linked with the possible source of distant comets
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  1. It has not completely cleared its orbit
  2. It does not revolve around the Sun
  3. It is a very large gaseous planet
  4. It is outside the Milky Way
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  1. The planet moves only in a straight line
  2. The planet becomes the dominant gravitational body in its orbit
  3. The planet becomes a star itself
  4. The planet leaves its orbit

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